EP0364124A2 - Aquariumbeleuchtung - Google Patents

Aquariumbeleuchtung Download PDF

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Publication number
EP0364124A2
EP0364124A2 EP89309716A EP89309716A EP0364124A2 EP 0364124 A2 EP0364124 A2 EP 0364124A2 EP 89309716 A EP89309716 A EP 89309716A EP 89309716 A EP89309716 A EP 89309716A EP 0364124 A2 EP0364124 A2 EP 0364124A2
Authority
EP
European Patent Office
Prior art keywords
fluorescent lamp
phosphor
red
lamp according
green
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89309716A
Other languages
English (en)
French (fr)
Other versions
EP0364124A3 (en
EP0364124B1 (de
Inventor
Milroy Gamani Abeywickrama
Barry John Newman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EMI Group Ltd
Original Assignee
Thorn EMI PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thorn EMI PLC filed Critical Thorn EMI PLC
Priority to AT89309716T priority Critical patent/ATE86792T1/de
Publication of EP0364124A2 publication Critical patent/EP0364124A2/de
Publication of EP0364124A3 publication Critical patent/EP0364124A3/en
Application granted granted Critical
Publication of EP0364124B1 publication Critical patent/EP0364124B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/06—Arrangements for heating or lighting in, or attached to, receptacles for live fish
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/44—Devices characterised by the luminescent material

Definitions

  • This invention relates to aquarium lighting and, in particular to a fluorescent lamp for use in aquaria.
  • Aquaria particularly the relatively small type for household use are commonly lit with fluorescent lamps.
  • Further disadvantages of this lamp include low lumen output, poor lumen maintenance and a large colour drift with age affecting both lamp appearance and colour rendering.
  • the luminescent layer in said lamp comprising a mixture of red, green and blue phosphors, the red phosphor emitting predominantly in the spectral region of from 610 nm to 620 nm, the green phosphor emitting predominantly in the spectral region of from 540 nm to 545 nm and the blue phosphor having a peak emission wavelength between 430 nm and 480 nm with the half peak width not exceeding 80 nm, said red, green and blue phosphors being blended to form said mixture in such proportions that the colour co-ordinates of the lamp employing said mixture on the CIE chromaticity diagram differ from the point x equals 0.300 and y equals 0.232 in any direction by no more than 10 standard deviations of colour matching (SDCM).
  • SDCM standard deviations of colour matching
  • the lamp of our invention has the colour co-ordinates x equals 0.300 and y equals 0.232.
  • red, green and blue phosphors which may be used to form the above mixture are well known in the art and we have found that suitable such phosphors include the following:-
  • Yttrium and/or gadolinium oxides activated by trivalent europium and having the following formula: (Y a Gd 1-a )2O3 : Eu3+
  • a is 1, i.e. the phosphor is:- Y2O3 : Eu3+
  • Cerium and terbium activated aluminates, silicates, phosphates and borates selected from compounds of the following formulae:- CeMg Al11O19 : Tb Y2SiO5 : Ce, Tb LaPO4 : Ce,Tb LaMgB5O10 : Ce, Tb
  • CeMgAl11O19 Tb and LaPO4 : Ce, Tb
  • Yttrium oxide activated with trivalent europium as commercially supplied by Elgar Phosphors & Chemicals Ltd., Lincoln Road, Enfield, Middlesex, under the code number 2005.
  • This material when illuminated by the ultraviolet light produced in a low pressure mercury vapour discharge such as occurs in known fluorescent lamps emits predominantly in the spectral region of from 610nm to 620nm [see spectrum in accompanying Figure 2a].
  • This material when illuminated by ultraviolet light as above exhibits peak emission at a wavelength, [as can be seen from the spectrum in Figure 2c], in the range of 430 nm to 480 nm and has a half peak width of 50 nm.
  • the mixture of phosphors contained the following proportions by weight of the above phosphors: red phosphor : 37% green phosphor : 19% blue phosphor : 44%
  • the said mixture was coated onto the inside surface of a glass tube of 1.5 inch diameter and 4 feet in length which was then used to produce a 40w fluorescent lamp.
  • This lamp had the co-ordinates on the CIE chromaticity diagram of x equals 0.300 and y equals 0.232.
  • the lamp also had an output of 2000 lumens (cf. 1100 lumens for the corresponding lamp previously used in aquaria). After 2000 hours in use the lamp had a lumen output equal to 95% of its initial lumen output and showed only minor colour drift (less than 3 SDCM). This compares with a lumen maintenance of the lamp most commonly previously based in aquaria of 82% after 2000 hours, and a large colour drift.
  • this invention provides aquarium lighting which has improved lumen output and maintenance and exhibits only minor colour drift. In addition to this it provides a very pleasing subjective effect. There is a marked absence of the reddish cast which the previously commonly based lamp types imparted to almost all colours and it is thus possible for the viewer to appreciate all the many and varied colours of the fish, coral, algae and other objects commonly included in an aquarium, whether of the cold freshwater, tropical freshwater or tropical marine type.
  • the lamps of this invention when used over tropical marine aquaria are particularly suitable for the invertebrates such as coral and algae whose individual and symbiotic growth are supported by the lamps.
  • invertebrates such as coral and algae whose individual and symbiotic growth are supported by the lamps.
  • invertebrates such as coral and algae whose individual and symbiotic growth are supported by the lamps.
  • light dependent marine invertebrates e.g. mushroom corals, goniapora, anemones and clams
  • micro/macro algae e.g.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Luminescent Compositions (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Mechanical Means For Catching Fish (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Cultivation Of Seaweed (AREA)
EP89309716A 1988-10-08 1989-09-25 Aquariumbeleuchtung Expired - Lifetime EP0364124B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89309716T ATE86792T1 (de) 1988-10-08 1989-09-25 Aquariumbeleuchtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8823691 1988-10-08
GB888823691A GB8823691D0 (en) 1988-10-08 1988-10-08 Aquarium lighting

Publications (3)

Publication Number Publication Date
EP0364124A2 true EP0364124A2 (de) 1990-04-18
EP0364124A3 EP0364124A3 (en) 1990-10-31
EP0364124B1 EP0364124B1 (de) 1993-03-10

Family

ID=10644940

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89309716A Expired - Lifetime EP0364124B1 (de) 1988-10-08 1989-09-25 Aquariumbeleuchtung

Country Status (7)

Country Link
US (1) US5028839A (de)
EP (1) EP0364124B1 (de)
JP (1) JPH02163023A (de)
AT (1) ATE86792T1 (de)
CA (1) CA2000316A1 (de)
DE (1) DE68905287T2 (de)
GB (1) GB8823691D0 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594424A1 (de) * 1992-10-21 1994-04-27 Flowil International Lighting (Holding) B.V. Fluoreszente Lampe mit verbesserter Phosphormischung
EP0625793A3 (de) * 1993-05-17 1995-01-04 Ge Lighting Ltd Fluoreszente Aquariumlampe.
EP0789385A1 (de) * 1996-02-09 1997-08-13 Stanley Electric Co., Ltd. Formulierungsverfahren eines fluoreszenten Dreiwellenlängenmaterials und fluoreszente Dreiwellenlängelampe mit diesem fluoreszenten Material
US6222312B1 (en) 2000-03-17 2001-04-24 Philips Electronics North America Corp. Fluorescent lamp having wide bandwidth blue-green phosphor
WO2002043107A1 (de) * 2000-11-27 2002-05-30 Raylux Gmbh Kompakte elektrodenlose niederdruck-gasentladungslampe mit erhöhter lebensdauer
EP1587132A3 (de) * 2004-03-25 2007-03-14 NEC Corporation Im sichtbaren Licht emittierende fluoreszente Lampe

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05217556A (ja) * 1992-02-07 1993-08-27 Matsushita Electric Ind Co Ltd 蛍光ランプ
DE19638667C2 (de) * 1996-09-20 2001-05-17 Osram Opto Semiconductors Gmbh Mischfarbiges Licht abstrahlendes Halbleiterbauelement mit Lumineszenzkonversionselement
DE29724847U1 (de) * 1996-06-26 2004-09-30 Osram Opto Semiconductors Gmbh Lichtabstrahlendes Halbleiterbauelement mit Lumineszenzkonversionselement
US6219159B1 (en) * 1998-03-09 2001-04-17 Hewlett Packard Company Spectrally balanced scanner
DE19845302C2 (de) * 1998-10-01 2002-12-05 Uv Power Licht Gmbh Leuchtstofflampe
WO2000049150A1 (en) * 1999-02-18 2000-08-24 National University Of Singapore Chimeric gene constructs for generation of fluorescent transgenic ornamental fish
KR100619410B1 (ko) * 2004-11-09 2006-09-07 금호전기주식회사 고효율 형광램프

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL164697C (nl) * 1973-10-05 1981-01-15 Philips Nv Lagedrukkwikdampontladingslamp.
US4176299A (en) * 1975-10-03 1979-11-27 Westinghouse Electric Corp. Method for efficiently generating white light with good color rendition of illuminated objects
US4431942A (en) * 1981-11-04 1984-02-14 North American Philips Electric Corp. Color-corrected hid mercury-vapor lamp having good color rendering and a desirable emission color
JPS58103769A (ja) * 1981-12-16 1983-06-20 Nec Home Electronics Ltd 螢光ランプ
KR950009041B1 (ko) * 1985-12-16 1995-08-14 가세이옾토닉스 가부시끼가이샤 발광 형광 조성물, 그 제조 공정 및 그를 사용한 형광등

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594424A1 (de) * 1992-10-21 1994-04-27 Flowil International Lighting (Holding) B.V. Fluoreszente Lampe mit verbesserter Phosphormischung
EP0625793A3 (de) * 1993-05-17 1995-01-04 Ge Lighting Ltd Fluoreszente Aquariumlampe.
EP0789385A1 (de) * 1996-02-09 1997-08-13 Stanley Electric Co., Ltd. Formulierungsverfahren eines fluoreszenten Dreiwellenlängenmaterials und fluoreszente Dreiwellenlängelampe mit diesem fluoreszenten Material
US5821687A (en) * 1996-02-09 1998-10-13 Stanley Electric Co., Ltd. Method for formulating three-wavelength fluorescent material and three-wavelength fluorescent lamp-using fluorescent material produced by the same
US6222312B1 (en) 2000-03-17 2001-04-24 Philips Electronics North America Corp. Fluorescent lamp having wide bandwidth blue-green phosphor
WO2002043107A1 (de) * 2000-11-27 2002-05-30 Raylux Gmbh Kompakte elektrodenlose niederdruck-gasentladungslampe mit erhöhter lebensdauer
EP1587132A3 (de) * 2004-03-25 2007-03-14 NEC Corporation Im sichtbaren Licht emittierende fluoreszente Lampe

Also Published As

Publication number Publication date
JPH02163023A (ja) 1990-06-22
ATE86792T1 (de) 1993-03-15
DE68905287D1 (en) 1993-04-15
EP0364124A3 (en) 1990-10-31
CA2000316A1 (en) 1990-04-08
GB8823691D0 (en) 1988-11-16
DE68905287T2 (de) 1993-06-17
EP0364124B1 (de) 1993-03-10
US5028839A (en) 1991-07-02

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